diff --git a/app/corpora/events.py b/app/corpora/events.py
index e33d275e0769592460dfdeeced859c754a843ca5..601cd65448307bf252f02ef68bfba3086d2fc7f6 100644
--- a/app/corpora/events.py
+++ b/app/corpora/events.py
@@ -7,7 +7,15 @@ from .CQiWrapper.CQiWrapper import CQiWrapper
 import logging
 
 
+'''
+' A dictionary containing lists of with corpus ids associated Socket.IO session
+' ids (sid). {<corpus_id>: [<sid>, ...], ...}
+'''
 analysis_sessions = {}
+'''
+' A dictionary containing Socket.IO session id - CQi client pairs.
+' {<sid>: CQi client, ...}
+'''
 analysis_clients = {}
 
 
@@ -26,7 +34,13 @@ def init_corpus_analysis(corpus_id):
 def recv_query(message):
     logger = logging.getLogger(__name__)
     logger.warning(message)
-    # analysis_client = analysis_clients[request.sid]
+    analysis_client = analysis_clients[request.sid]
+    corpus_name = 'CORPUS'
+    result_subcorpus_name = 'Query-results'  # should be set by the user somehow
+    query = message['query']
+    analysis_client.create_attribute_strings(corpus_name)
+    analysis_client.query_subcorpus(corpus_name, result_subcorpus_name, query)
+    analysis_client.show_results(corpus_name)
 
 
 def observe_corpus_analysis_connection(app, corpus_id, session_id):
@@ -40,18 +54,16 @@ def observe_corpus_analysis_connection(app, corpus_id, session_id):
                                      password='opaque', port=4877,
                                      username='opaque')
         analysis_client.connect()
-        analysis_clients['session_id'] = analysis_client
-        corpus_name = 'CORPUS'
-        result_subcorpus_name = 'Query-results'  # should be set by the user somehow
-        query = '"and";'
-        analysis_client.create_attribute_strings(corpus_name)
-        logger.warning('Log after create_attribute_strings.')
-        analysis_client.query_subcorpus(corpus_name, result_subcorpus_name, query)
-        logger.warning('Log after query_subcorpus.')
-        analysis_client.show_results(corpus_name)
+        analysis_clients[session_id] = analysis_client
         while session_id in connected_sessions:
-            logger.warning(analysis_client.ctrl_ping())
-            socketio.sleep(3)
+            try:
+                analysis_client.ctrl_ping()
+            except Exception as err:
+                logger.warning('[Exception]: {}'.format(err))
+                break
+            else:
+                socketio.sleep(3)
+        analysis_client.disconnect()
         analysis_clients.pop(session_id, None)
         analysis_sessions[str(corpus_id)].remove(session_id)
         if not analysis_sessions[str(corpus_id)]: